Add support for KCONFIG_ALLCONFIG

This allows some symbol values to be forced while running
all{def,no,yes,mod}config.py. See Documentation/kbuild/kconfig.txt in
the Linux kernel.

Add a helper function load_allconfig() to Kconfiglib to avoid code
duplication in the tools.

Also add functions for enabling/disabling the warning that's generated
when a symbol is assigned multiple times in a (set of) .config files and
the values differ. It should be disabled when merging the
KCONFIG_ALLCONFIG configuration file. Previously, only the warning
generated when the assigned values are identical could be disabled.

Disable all warnings related to assigning a symbol multiple times in
examples/merge_config.py as well.

1 files changed, 4 insertions, 0 deletions

diff --git a/allyesconfig.py b/allyesconfig.py
index d9b799e..87ba9c6 100755
--- a/allyesconfig.py
+++ b/allyesconfig.py
@@ -55,6 +55,10 @@ def main():
     for choice in kconf.unique_choices:
         choice.set_value(2)
 
+    kconf.enable_warnings()
+
+    kconfiglib.load_allconfig(kconf, "allyes.config")
+
     kconf.write_config(kconfiglib.standard_config_filename())
 
 if __name__ == "__main__":